| /* |
| lm85.c - Part of lm_sensors, Linux kernel modules for hardware |
| monitoring |
| Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
| Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com> |
| Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de> |
| Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com> |
| |
| Chip details at <http://www.national.com/ds/LM/LM85.pdf> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <linux/i2c.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-vid.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/err.h> |
| #include <linux/mutex.h> |
| |
| /* Addresses to scan */ |
| static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
| |
| /* Insmod parameters */ |
| I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); |
| |
| /* The LM85 registers */ |
| |
| #define LM85_REG_IN(nr) (0x20 + (nr)) |
| #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) |
| #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) |
| |
| #define LM85_REG_TEMP(nr) (0x25 + (nr)) |
| #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) |
| #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) |
| |
| /* Fan speeds are LSB, MSB (2 bytes) */ |
| #define LM85_REG_FAN(nr) (0x28 + (nr) * 2) |
| #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2) |
| |
| #define LM85_REG_PWM(nr) (0x30 + (nr)) |
| |
| #define LM85_REG_COMPANY 0x3e |
| #define LM85_REG_VERSTEP 0x3f |
| /* These are the recognized values for the above regs */ |
| #define LM85_COMPANY_NATIONAL 0x01 |
| #define LM85_COMPANY_ANALOG_DEV 0x41 |
| #define LM85_COMPANY_SMSC 0x5c |
| #define LM85_VERSTEP_VMASK 0xf0 |
| #define LM85_VERSTEP_GENERIC 0x60 |
| #define LM85_VERSTEP_LM85C 0x60 |
| #define LM85_VERSTEP_LM85B 0x62 |
| #define LM85_VERSTEP_ADM1027 0x60 |
| #define LM85_VERSTEP_ADT7463 0x62 |
| #define LM85_VERSTEP_ADT7463C 0x6A |
| #define LM85_VERSTEP_EMC6D100_A0 0x60 |
| #define LM85_VERSTEP_EMC6D100_A1 0x61 |
| #define LM85_VERSTEP_EMC6D102 0x65 |
| |
| #define LM85_REG_CONFIG 0x40 |
| |
| #define LM85_REG_ALARM1 0x41 |
| #define LM85_REG_ALARM2 0x42 |
| |
| #define LM85_REG_VID 0x43 |
| |
| /* Automated FAN control */ |
| #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) |
| #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) |
| #define LM85_REG_AFAN_SPIKE1 0x62 |
| #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) |
| #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) |
| #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) |
| #define LM85_REG_AFAN_HYST1 0x6d |
| #define LM85_REG_AFAN_HYST2 0x6e |
| |
| #define ADM1027_REG_EXTEND_ADC1 0x76 |
| #define ADM1027_REG_EXTEND_ADC2 0x77 |
| |
| #define EMC6D100_REG_ALARM3 0x7d |
| /* IN5, IN6 and IN7 */ |
| #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5)) |
| #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2) |
| #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2) |
| #define EMC6D102_REG_EXTEND_ADC1 0x85 |
| #define EMC6D102_REG_EXTEND_ADC2 0x86 |
| #define EMC6D102_REG_EXTEND_ADC3 0x87 |
| #define EMC6D102_REG_EXTEND_ADC4 0x88 |
| |
| |
| /* Conversions. Rounding and limit checking is only done on the TO_REG |
| variants. Note that you should be a bit careful with which arguments |
| these macros are called: arguments may be evaluated more than once. |
| */ |
| |
| /* IN are scaled acording to built-in resistors */ |
| static const int lm85_scaling[] = { /* .001 Volts */ |
| 2500, 2250, 3300, 5000, 12000, |
| 3300, 1500, 1800 /*EMC6D100*/ |
| }; |
| #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from)) |
| |
| #define INS_TO_REG(n, val) \ |
| SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255) |
| |
| #define INSEXT_FROM_REG(n, val, ext) \ |
| SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n]) |
| |
| #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n]) |
| |
| /* FAN speed is measured using 90kHz clock */ |
| static inline u16 FAN_TO_REG(unsigned long val) |
| { |
| if (!val) |
| return 0xffff; |
| return SENSORS_LIMIT(5400000 / val, 1, 0xfffe); |
| } |
| #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ |
| 5400000 / (val)) |
| |
| /* Temperature is reported in .001 degC increments */ |
| #define TEMP_TO_REG(val) \ |
| SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127) |
| #define TEMPEXT_FROM_REG(val, ext) \ |
| SCALE(((val) << 4) + (ext), 16, 1000) |
| #define TEMP_FROM_REG(val) ((val) * 1000) |
| |
| #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255) |
| #define PWM_FROM_REG(val) (val) |
| |
| |
| /* ZONEs have the following parameters: |
| * Limit (low) temp, 1. degC |
| * Hysteresis (below limit), 1. degC (0-15) |
| * Range of speed control, .1 degC (2-80) |
| * Critical (high) temp, 1. degC |
| * |
| * FAN PWMs have the following parameters: |
| * Reference Zone, 1, 2, 3, etc. |
| * Spinup time, .05 sec |
| * PWM value at limit/low temp, 1 count |
| * PWM Frequency, 1. Hz |
| * PWM is Min or OFF below limit, flag |
| * Invert PWM output, flag |
| * |
| * Some chips filter the temp, others the fan. |
| * Filter constant (or disabled) .1 seconds |
| */ |
| |
| /* These are the zone temperature range encodings in .001 degree C */ |
| static const int lm85_range_map[] = { |
| 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000, |
| 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000 |
| }; |
| |
| static int RANGE_TO_REG(int range) |
| { |
| int i; |
| |
| if (range >= lm85_range_map[15]) |
| return 15; |
| |
| /* Find the closest match */ |
| for (i = 14; i >= 0; --i) { |
| if (range >= lm85_range_map[i]) { |
| if ((lm85_range_map[i + 1] - range) < |
| (range - lm85_range_map[i])) |
| return i + 1; |
| return i; |
| } |
| } |
| |
| return 0; |
| } |
| #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f] |
| |
| /* These are the PWM frequency encodings */ |
| static const int lm85_freq_map[8] = { /* 1 Hz */ |
| 10, 15, 23, 30, 38, 47, 62, 94 |
| }; |
| |
| static int FREQ_TO_REG(int freq) |
| { |
| int i; |
| |
| /* Find the closest match */ |
| for (i = 0; i < 7; ++i) |
| if (freq <= (lm85_freq_map[i] + lm85_freq_map[i + 1]) / 2) |
| break; |
| return i; |
| } |
| #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 0x07] |
| |
| /* Since we can't use strings, I'm abusing these numbers |
| * to stand in for the following meanings: |
| * 1 -- PWM responds to Zone 1 |
| * 2 -- PWM responds to Zone 2 |
| * 3 -- PWM responds to Zone 3 |
| * 23 -- PWM responds to the higher temp of Zone 2 or 3 |
| * 123 -- PWM responds to highest of Zone 1, 2, or 3 |
| * 0 -- PWM is always at 0% (ie, off) |
| * -1 -- PWM is always at 100% |
| * -2 -- PWM responds to manual control |
| */ |
| |
| static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; |
| #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5] |
| |
| static int ZONE_TO_REG(int zone) |
| { |
| int i; |
| |
| for (i = 0; i <= 7; ++i) |
| if (zone == lm85_zone_map[i]) |
| break; |
| if (i > 7) /* Not found. */ |
| i = 3; /* Always 100% */ |
| return i << 5; |
| } |
| |
| #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15) |
| #define HYST_FROM_REG(val) ((val) * 1000) |
| |
| /* Chip sampling rates |
| * |
| * Some sensors are not updated more frequently than once per second |
| * so it doesn't make sense to read them more often than that. |
| * We cache the results and return the saved data if the driver |
| * is called again before a second has elapsed. |
| * |
| * Also, there is significant configuration data for this chip |
| * given the automatic PWM fan control that is possible. There |
| * are about 47 bytes of config data to only 22 bytes of actual |
| * readings. So, we keep the config data up to date in the cache |
| * when it is written and only sample it once every 1 *minute* |
| */ |
| #define LM85_DATA_INTERVAL (HZ + HZ / 2) |
| #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) |
| |
| /* LM85 can automatically adjust fan speeds based on temperature |
| * This structure encapsulates an entire Zone config. There are |
| * three zones (one for each temperature input) on the lm85 |
| */ |
| struct lm85_zone { |
| s8 limit; /* Low temp limit */ |
| u8 hyst; /* Low limit hysteresis. (0-15) */ |
| u8 range; /* Temp range, encoded */ |
| s8 critical; /* "All fans ON" temp limit */ |
| u8 off_desired; /* Actual "off" temperature specified. Preserved |
| * to prevent "drift" as other autofan control |
| * values change. |
| */ |
| u8 max_desired; /* Actual "max" temperature specified. Preserved |
| * to prevent "drift" as other autofan control |
| * values change. |
| */ |
| }; |
| |
| struct lm85_autofan { |
| u8 config; /* Register value */ |
| u8 min_pwm; /* Minimum PWM value, encoded */ |
| u8 min_off; /* Min PWM or OFF below "limit", flag */ |
| }; |
| |
| /* For each registered chip, we need to keep some data in memory. |
| The structure is dynamically allocated. */ |
| struct lm85_data { |
| struct i2c_client client; |
| struct device *hwmon_dev; |
| enum chips type; |
| |
| struct mutex update_lock; |
| int valid; /* !=0 if following fields are valid */ |
| unsigned long last_reading; /* In jiffies */ |
| unsigned long last_config; /* In jiffies */ |
| |
| u8 in[8]; /* Register value */ |
| u8 in_max[8]; /* Register value */ |
| u8 in_min[8]; /* Register value */ |
| s8 temp[3]; /* Register value */ |
| s8 temp_min[3]; /* Register value */ |
| s8 temp_max[3]; /* Register value */ |
| u16 fan[4]; /* Register value */ |
| u16 fan_min[4]; /* Register value */ |
| u8 pwm[3]; /* Register value */ |
| u8 pwm_freq[3]; /* Register encoding */ |
| u8 temp_ext[3]; /* Decoded values */ |
| u8 in_ext[8]; /* Decoded values */ |
| u8 vid; /* Register value */ |
| u8 vrm; /* VRM version */ |
| u32 alarms; /* Register encoding, combined */ |
| struct lm85_autofan autofan[3]; |
| struct lm85_zone zone[3]; |
| }; |
| |
| static int lm85_attach_adapter(struct i2c_adapter *adapter); |
| static int lm85_detect(struct i2c_adapter *adapter, int address, |
| int kind); |
| static int lm85_detach_client(struct i2c_client *client); |
| |
| static int lm85_read_value(struct i2c_client *client, u8 reg); |
| static void lm85_write_value(struct i2c_client *client, u8 reg, int value); |
| static struct lm85_data *lm85_update_device(struct device *dev); |
| |
| |
| static struct i2c_driver lm85_driver = { |
| .driver = { |
| .name = "lm85", |
| }, |
| .attach_adapter = lm85_attach_adapter, |
| .detach_client = lm85_detach_client, |
| }; |
| |
| |
| /* 4 Fans */ |
| static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr])); |
| } |
| |
| static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr])); |
| } |
| |
| static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| unsigned long val = simple_strtoul(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->fan_min[nr] = FAN_TO_REG(val); |
| lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define show_fan_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
| show_fan, NULL, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_fan_min, set_fan_min, offset - 1) |
| |
| show_fan_offset(1); |
| show_fan_offset(2); |
| show_fan_offset(3); |
| show_fan_offset(4); |
| |
| /* vid, vrm, alarms */ |
| |
| static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct lm85_data *data = lm85_update_device(dev); |
| int vid; |
| |
| if (data->type == adt7463 && (data->vid & 0x80)) { |
| /* 6-pin VID (VRM 10) */ |
| vid = vid_from_reg(data->vid & 0x3f, data->vrm); |
| } else { |
| /* 5-pin VID (VRM 9) */ |
| vid = vid_from_reg(data->vid & 0x1f, data->vrm); |
| } |
| |
| return sprintf(buf, "%d\n", vid); |
| } |
| |
| static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); |
| |
| static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct lm85_data *data = dev_get_drvdata(dev); |
| return sprintf(buf, "%ld\n", (long) data->vrm); |
| } |
| |
| static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct lm85_data *data = dev_get_drvdata(dev); |
| data->vrm = simple_strtoul(buf, NULL, 10); |
| return count; |
| } |
| |
| static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); |
| |
| static ssize_t show_alarms_reg(struct device *dev, struct device_attribute |
| *attr, char *buf) |
| { |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%u\n", data->alarms); |
| } |
| |
| static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); |
| |
| static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); |
| } |
| |
| static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); |
| static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18); |
| static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16); |
| static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17); |
| static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); |
| static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); |
| static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6); |
| static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); |
| static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); |
| static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); |
| static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12); |
| static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13); |
| |
| /* pwm */ |
| |
| static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); |
| } |
| |
| static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->pwm[nr] = PWM_TO_REG(val); |
| lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm_enable(struct device *dev, struct device_attribute |
| *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| int pwm_zone, enable; |
| |
| pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); |
| switch (pwm_zone) { |
| case -1: /* PWM is always at 100% */ |
| enable = 0; |
| break; |
| case 0: /* PWM is always at 0% */ |
| case -2: /* PWM responds to manual control */ |
| enable = 1; |
| break; |
| default: /* PWM in automatic mode */ |
| enable = 2; |
| } |
| return sprintf(buf, "%d\n", enable); |
| } |
| |
| static ssize_t set_pwm_enable(struct device *dev, struct device_attribute |
| *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| u8 config; |
| |
| switch (val) { |
| case 0: |
| config = 3; |
| break; |
| case 1: |
| config = 7; |
| break; |
| case 2: |
| /* Here we have to choose arbitrarily one of the 5 possible |
| configurations; I go for the safest */ |
| config = 6; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| mutex_lock(&data->update_lock); |
| data->autofan[nr].config = lm85_read_value(client, |
| LM85_REG_AFAN_CONFIG(nr)); |
| data->autofan[nr].config = (data->autofan[nr].config & ~0xe0) |
| | (config << 5); |
| lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), |
| data->autofan[nr].config); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm_freq(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", FREQ_FROM_REG(data->pwm_freq[nr])); |
| } |
| |
| static ssize_t set_pwm_freq(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->pwm_freq[nr] = FREQ_TO_REG(val); |
| lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), |
| (data->zone[nr].range << 4) |
| | data->pwm_freq[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define show_pwm_reg(offset) \ |
| static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ |
| show_pwm, set_pwm, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
| show_pwm_enable, set_pwm_enable, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \ |
| show_pwm_freq, set_pwm_freq, offset - 1) |
| |
| show_pwm_reg(1); |
| show_pwm_reg(2); |
| show_pwm_reg(3); |
| |
| /* Voltages */ |
| |
| static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr], |
| data->in_ext[nr])); |
| } |
| |
| static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr])); |
| } |
| |
| static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->in_min[nr] = INS_TO_REG(nr, val); |
| lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr])); |
| } |
| |
| static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->in_max[nr] = INS_TO_REG(nr, val); |
| lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define show_in_reg(offset) \ |
| static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| show_in, NULL, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_in_min, set_in_min, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_in_max, set_in_max, offset) |
| |
| show_in_reg(0); |
| show_in_reg(1); |
| show_in_reg(2); |
| show_in_reg(3); |
| show_in_reg(4); |
| show_in_reg(5); |
| show_in_reg(6); |
| show_in_reg(7); |
| |
| /* Temps */ |
| |
| static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr], |
| data->temp_ext[nr])); |
| } |
| |
| static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); |
| } |
| |
| static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->temp_min[nr] = TEMP_TO_REG(val); |
| lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); |
| } |
| |
| static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->temp_max[nr] = TEMP_TO_REG(val); |
| lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define show_temp_reg(offset) \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
| show_temp, NULL, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_temp_min, set_temp_min, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_temp_max, set_temp_max, offset - 1); |
| |
| show_temp_reg(1); |
| show_temp_reg(2); |
| show_temp_reg(3); |
| |
| |
| /* Automatic PWM control */ |
| |
| static ssize_t show_pwm_auto_channels(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config)); |
| } |
| |
| static ssize_t set_pwm_auto_channels(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) |
| | ZONE_TO_REG(val); |
| lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), |
| data->autofan[nr].config); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm_auto_pwm_min(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); |
| } |
| |
| static ssize_t set_pwm_auto_pwm_min(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->autofan[nr].min_pwm = PWM_TO_REG(val); |
| lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), |
| data->autofan[nr].min_pwm); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", data->autofan[nr].min_off); |
| } |
| |
| static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| u8 tmp; |
| |
| mutex_lock(&data->update_lock); |
| data->autofan[nr].min_off = val; |
| tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); |
| tmp &= ~(0x20 << nr); |
| if (data->autofan[nr].min_off) |
| tmp |= 0x20 << nr; |
| lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define pwm_auto(offset) \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \ |
| S_IRUGO | S_IWUSR, show_pwm_auto_channels, \ |
| set_pwm_auto_channels, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \ |
| S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \ |
| set_pwm_auto_pwm_min, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \ |
| S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \ |
| set_pwm_auto_pwm_minctl, offset - 1) |
| |
| pwm_auto(1); |
| pwm_auto(2); |
| pwm_auto(3); |
| |
| /* Temperature settings for automatic PWM control */ |
| |
| static ssize_t show_temp_auto_temp_off(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) - |
| HYST_FROM_REG(data->zone[nr].hyst)); |
| } |
| |
| static ssize_t set_temp_auto_temp_off(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| int min; |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| min = TEMP_FROM_REG(data->zone[nr].limit); |
| data->zone[nr].off_desired = TEMP_TO_REG(val); |
| data->zone[nr].hyst = HYST_TO_REG(min - val); |
| if (nr == 0 || nr == 1) { |
| lm85_write_value(client, LM85_REG_AFAN_HYST1, |
| (data->zone[0].hyst << 4) |
| | data->zone[1].hyst); |
| } else { |
| lm85_write_value(client, LM85_REG_AFAN_HYST2, |
| (data->zone[2].hyst << 4)); |
| } |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp_auto_temp_min(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit)); |
| } |
| |
| static ssize_t set_temp_auto_temp_min(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->zone[nr].limit = TEMP_TO_REG(val); |
| lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), |
| data->zone[nr].limit); |
| |
| /* Update temp_auto_max and temp_auto_range */ |
| data->zone[nr].range = RANGE_TO_REG( |
| TEMP_FROM_REG(data->zone[nr].max_desired) - |
| TEMP_FROM_REG(data->zone[nr].limit)); |
| lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), |
| ((data->zone[nr].range & 0x0f) << 4) |
| | (data->pwm_freq[nr] & 0x07)); |
| |
| /* Update temp_auto_hyst and temp_auto_off */ |
| data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( |
| data->zone[nr].limit) - TEMP_FROM_REG( |
| data->zone[nr].off_desired)); |
| if (nr == 0 || nr == 1) { |
| lm85_write_value(client, LM85_REG_AFAN_HYST1, |
| (data->zone[0].hyst << 4) |
| | data->zone[1].hyst); |
| } else { |
| lm85_write_value(client, LM85_REG_AFAN_HYST2, |
| (data->zone[2].hyst << 4)); |
| } |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp_auto_temp_max(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) + |
| RANGE_FROM_REG(data->zone[nr].range)); |
| } |
| |
| static ssize_t set_temp_auto_temp_max(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| int min; |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| min = TEMP_FROM_REG(data->zone[nr].limit); |
| data->zone[nr].max_desired = TEMP_TO_REG(val); |
| data->zone[nr].range = RANGE_TO_REG( |
| val - min); |
| lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), |
| ((data->zone[nr].range & 0x0f) << 4) |
| | (data->pwm_freq[nr] & 0x07)); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp_auto_temp_crit(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct lm85_data *data = lm85_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical)); |
| } |
| |
| static ssize_t set_temp_auto_temp_crit(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| int nr = to_sensor_dev_attr(attr)->index; |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| long val = simple_strtol(buf, NULL, 10); |
| |
| mutex_lock(&data->update_lock); |
| data->zone[nr].critical = TEMP_TO_REG(val); |
| lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), |
| data->zone[nr].critical); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define temp_auto(offset) \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \ |
| S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \ |
| set_temp_auto_temp_off, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \ |
| S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \ |
| set_temp_auto_temp_min, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \ |
| S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \ |
| set_temp_auto_temp_max, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \ |
| S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \ |
| set_temp_auto_temp_crit, offset - 1); |
| |
| temp_auto(1); |
| temp_auto(2); |
| temp_auto(3); |
| |
| static int lm85_attach_adapter(struct i2c_adapter *adapter) |
| { |
| if (!(adapter->class & I2C_CLASS_HWMON)) |
| return 0; |
| return i2c_probe(adapter, &addr_data, lm85_detect); |
| } |
| |
| static struct attribute *lm85_attributes[] = { |
| &sensor_dev_attr_fan1_input.dev_attr.attr, |
| &sensor_dev_attr_fan2_input.dev_attr.attr, |
| &sensor_dev_attr_fan3_input.dev_attr.attr, |
| &sensor_dev_attr_fan4_input.dev_attr.attr, |
| &sensor_dev_attr_fan1_min.dev_attr.attr, |
| &sensor_dev_attr_fan2_min.dev_attr.attr, |
| &sensor_dev_attr_fan3_min.dev_attr.attr, |
| &sensor_dev_attr_fan4_min.dev_attr.attr, |
| &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan4_alarm.dev_attr.attr, |
| |
| &sensor_dev_attr_pwm1.dev_attr.attr, |
| &sensor_dev_attr_pwm2.dev_attr.attr, |
| &sensor_dev_attr_pwm3.dev_attr.attr, |
| &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm1_freq.dev_attr.attr, |
| &sensor_dev_attr_pwm2_freq.dev_attr.attr, |
| &sensor_dev_attr_pwm3_freq.dev_attr.attr, |
| |
| &sensor_dev_attr_in0_input.dev_attr.attr, |
| &sensor_dev_attr_in1_input.dev_attr.attr, |
| &sensor_dev_attr_in2_input.dev_attr.attr, |
| &sensor_dev_attr_in3_input.dev_attr.attr, |
| &sensor_dev_attr_in0_min.dev_attr.attr, |
| &sensor_dev_attr_in1_min.dev_attr.attr, |
| &sensor_dev_attr_in2_min.dev_attr.attr, |
| &sensor_dev_attr_in3_min.dev_attr.attr, |
| &sensor_dev_attr_in0_max.dev_attr.attr, |
| &sensor_dev_attr_in1_max.dev_attr.attr, |
| &sensor_dev_attr_in2_max.dev_attr.attr, |
| &sensor_dev_attr_in3_max.dev_attr.attr, |
| &sensor_dev_attr_in0_alarm.dev_attr.attr, |
| &sensor_dev_attr_in1_alarm.dev_attr.attr, |
| &sensor_dev_attr_in2_alarm.dev_attr.attr, |
| &sensor_dev_attr_in3_alarm.dev_attr.attr, |
| |
| &sensor_dev_attr_temp1_input.dev_attr.attr, |
| &sensor_dev_attr_temp2_input.dev_attr.attr, |
| &sensor_dev_attr_temp3_input.dev_attr.attr, |
| &sensor_dev_attr_temp1_min.dev_attr.attr, |
| &sensor_dev_attr_temp2_min.dev_attr.attr, |
| &sensor_dev_attr_temp3_min.dev_attr.attr, |
| &sensor_dev_attr_temp1_max.dev_attr.attr, |
| &sensor_dev_attr_temp2_max.dev_attr.attr, |
| &sensor_dev_attr_temp3_max.dev_attr.attr, |
| &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp1_fault.dev_attr.attr, |
| &sensor_dev_attr_temp3_fault.dev_attr.attr, |
| |
| &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr, |
| |
| &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr, |
| &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr, |
| &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr, |
| &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr, |
| &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr, |
| &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr, |
| &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr, |
| &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr, |
| &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr, |
| &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr, |
| &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr, |
| &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr, |
| |
| &dev_attr_vrm.attr, |
| &dev_attr_cpu0_vid.attr, |
| &dev_attr_alarms.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group lm85_group = { |
| .attrs = lm85_attributes, |
| }; |
| |
| static struct attribute *lm85_attributes_in4[] = { |
| &sensor_dev_attr_in4_input.dev_attr.attr, |
| &sensor_dev_attr_in4_min.dev_attr.attr, |
| &sensor_dev_attr_in4_max.dev_attr.attr, |
| &sensor_dev_attr_in4_alarm.dev_attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group lm85_group_in4 = { |
| .attrs = lm85_attributes_in4, |
| }; |
| |
| static struct attribute *lm85_attributes_in567[] = { |
| &sensor_dev_attr_in5_input.dev_attr.attr, |
| &sensor_dev_attr_in6_input.dev_attr.attr, |
| &sensor_dev_attr_in7_input.dev_attr.attr, |
| &sensor_dev_attr_in5_min.dev_attr.attr, |
| &sensor_dev_attr_in6_min.dev_attr.attr, |
| &sensor_dev_attr_in7_min.dev_attr.attr, |
| &sensor_dev_attr_in5_max.dev_attr.attr, |
| &sensor_dev_attr_in6_max.dev_attr.attr, |
| &sensor_dev_attr_in7_max.dev_attr.attr, |
| &sensor_dev_attr_in5_alarm.dev_attr.attr, |
| &sensor_dev_attr_in6_alarm.dev_attr.attr, |
| &sensor_dev_attr_in7_alarm.dev_attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group lm85_group_in567 = { |
| .attrs = lm85_attributes_in567, |
| }; |
| |
| static void lm85_init_client(struct i2c_client *client) |
| { |
| int value; |
| |
| /* Start monitoring if needed */ |
| value = lm85_read_value(client, LM85_REG_CONFIG); |
| if (!(value & 0x01)) { |
| dev_info(&client->dev, "Starting monitoring\n"); |
| lm85_write_value(client, LM85_REG_CONFIG, value | 0x01); |
| } |
| |
| /* Warn about unusual configuration bits */ |
| if (value & 0x02) |
| dev_warn(&client->dev, "Device configuration is locked\n"); |
| if (!(value & 0x04)) |
| dev_warn(&client->dev, "Device is not ready\n"); |
| } |
| |
| static int lm85_detect(struct i2c_adapter *adapter, int address, |
| int kind) |
| { |
| struct i2c_client *client; |
| struct lm85_data *data; |
| int err = 0; |
| const char *type_name; |
| |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
| /* We need to be able to do byte I/O */ |
| goto ERROR0; |
| } |
| |
| if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { |
| err = -ENOMEM; |
| goto ERROR0; |
| } |
| |
| client = &data->client; |
| i2c_set_clientdata(client, data); |
| client->addr = address; |
| client->adapter = adapter; |
| client->driver = &lm85_driver; |
| |
| /* If auto-detecting, determine the chip type */ |
| if (kind < 0) { |
| int company = lm85_read_value(client, LM85_REG_COMPANY); |
| int verstep = lm85_read_value(client, LM85_REG_VERSTEP); |
| |
| dev_dbg(&adapter->dev, "Detecting device at 0x%02x with " |
| "COMPANY: 0x%02x and VERSTEP: 0x%02x\n", |
| address, company, verstep); |
| |
| /* All supported chips have the version in common */ |
| if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC) { |
| dev_dbg(&adapter->dev, "Autodetection failed: " |
| "unsupported version\n"); |
| goto ERROR1; |
| } |
| kind = any_chip; |
| |
| /* Now, refine the detection */ |
| if (company == LM85_COMPANY_NATIONAL) { |
| switch (verstep) { |
| case LM85_VERSTEP_LM85C: |
| kind = lm85c; |
| break; |
| case LM85_VERSTEP_LM85B: |
| kind = lm85b; |
| break; |
| } |
| } else if (company == LM85_COMPANY_ANALOG_DEV) { |
| switch (verstep) { |
| case LM85_VERSTEP_ADM1027: |
| kind = adm1027; |
| break; |
| case LM85_VERSTEP_ADT7463: |
| case LM85_VERSTEP_ADT7463C: |
| kind = adt7463; |
| break; |
| } |
| } else if (company == LM85_COMPANY_SMSC) { |
| switch (verstep) { |
| case LM85_VERSTEP_EMC6D100_A0: |
| case LM85_VERSTEP_EMC6D100_A1: |
| /* Note: we can't tell a '100 from a '101 */ |
| kind = emc6d100; |
| break; |
| case LM85_VERSTEP_EMC6D102: |
| kind = emc6d102; |
| break; |
| } |
| } else { |
| dev_dbg(&adapter->dev, "Autodetection failed: " |
| "unknown vendor\n"); |
| goto ERROR1; |
| } |
| } |
| |
| /* Fill in the chip specific driver values */ |
| switch (kind) { |
| case lm85b: |
| type_name = "lm85b"; |
| break; |
| case lm85c: |
| type_name = "lm85c"; |
| break; |
| case adm1027: |
| type_name = "adm1027"; |
| break; |
| case adt7463: |
| type_name = "adt7463"; |
| break; |
| case emc6d100: |
| type_name = "emc6d100"; |
| break; |
| case emc6d102: |
| type_name = "emc6d102"; |
| break; |
| default: |
| type_name = "lm85"; |
| } |
| strlcpy(client->name, type_name, I2C_NAME_SIZE); |
| |
| /* Fill in the remaining client fields */ |
| data->type = kind; |
| mutex_init(&data->update_lock); |
| |
| /* Tell the I2C layer a new client has arrived */ |
| err = i2c_attach_client(client); |
| if (err) |
| goto ERROR1; |
| |
| /* Set the VRM version */ |
| data->vrm = vid_which_vrm(); |
| |
| /* Initialize the LM85 chip */ |
| lm85_init_client(client); |
| |
| /* Register sysfs hooks */ |
| err = sysfs_create_group(&client->dev.kobj, &lm85_group); |
| if (err) |
| goto ERROR2; |
| |
| /* The ADT7463 has an optional VRM 10 mode where pin 21 is used |
| as a sixth digital VID input rather than an analog input. */ |
| data->vid = lm85_read_value(client, LM85_REG_VID); |
| if (!(kind == adt7463 && (data->vid & 0x80))) |
| if ((err = sysfs_create_group(&client->dev.kobj, |
| &lm85_group_in4))) |
| goto ERROR3; |
| |
| /* The EMC6D100 has 3 additional voltage inputs */ |
| if (kind == emc6d100) |
| if ((err = sysfs_create_group(&client->dev.kobj, |
| &lm85_group_in567))) |
| goto ERROR3; |
| |
| data->hwmon_dev = hwmon_device_register(&client->dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| goto ERROR3; |
| } |
| |
| return 0; |
| |
| /* Error out and cleanup code */ |
| ERROR3: |
| sysfs_remove_group(&client->dev.kobj, &lm85_group); |
| sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); |
| if (kind == emc6d100) |
| sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); |
| ERROR2: |
| i2c_detach_client(client); |
| ERROR1: |
| kfree(data); |
| ERROR0: |
| return err; |
| } |
| |
| static int lm85_detach_client(struct i2c_client *client) |
| { |
| struct lm85_data *data = i2c_get_clientdata(client); |
| hwmon_device_unregister(data->hwmon_dev); |
| sysfs_remove_group(&client->dev.kobj, &lm85_group); |
| sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); |
| if (data->type == emc6d100) |
| sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); |
| i2c_detach_client(client); |
| kfree(data); |
| return 0; |
| } |
| |
| |
| static int lm85_read_value(struct i2c_client *client, u8 reg) |
| { |
| int res; |
| |
| /* What size location is it? */ |
| switch (reg) { |
| case LM85_REG_FAN(0): /* Read WORD data */ |
| case LM85_REG_FAN(1): |
| case LM85_REG_FAN(2): |
| case LM85_REG_FAN(3): |
| case LM85_REG_FAN_MIN(0): |
| case LM85_REG_FAN_MIN(1): |
| case LM85_REG_FAN_MIN(2): |
| case LM85_REG_FAN_MIN(3): |
| case LM85_REG_ALARM1: /* Read both bytes at once */ |
| res = i2c_smbus_read_byte_data(client, reg) & 0xff; |
| res |= i2c_smbus_read_byte_data(client, reg + 1) << 8; |
| break; |
| default: /* Read BYTE data */ |
| res = i2c_smbus_read_byte_data(client, reg); |
| break; |
| } |
| |
| return res; |
| } |
| |
| static void lm85_write_value(struct i2c_client *client, u8 reg, int value) |
| { |
| switch (reg) { |
| case LM85_REG_FAN(0): /* Write WORD data */ |
| case LM85_REG_FAN(1): |
| case LM85_REG_FAN(2): |
| case LM85_REG_FAN(3): |
| case LM85_REG_FAN_MIN(0): |
| case LM85_REG_FAN_MIN(1): |
| case LM85_REG_FAN_MIN(2): |
| case LM85_REG_FAN_MIN(3): |
| /* NOTE: ALARM is read only, so not included here */ |
| i2c_smbus_write_byte_data(client, reg, value & 0xff); |
| i2c_smbus_write_byte_data(client, reg + 1, value >> 8); |
| break; |
| default: /* Write BYTE data */ |
| i2c_smbus_write_byte_data(client, reg, value); |
| break; |
| } |
| } |
| |
| static struct lm85_data *lm85_update_device(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct lm85_data *data = i2c_get_clientdata(client); |
| int i; |
| |
| mutex_lock(&data->update_lock); |
| |
| if (!data->valid || |
| time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) { |
| /* Things that change quickly */ |
| dev_dbg(&client->dev, "Reading sensor values\n"); |
| |
| /* Have to read extended bits first to "freeze" the |
| * more significant bits that are read later. |
| * There are 2 additional resolution bits per channel and we |
| * have room for 4, so we shift them to the left. |
| */ |
| if (data->type == adm1027 || data->type == adt7463) { |
| int ext1 = lm85_read_value(client, |
| ADM1027_REG_EXTEND_ADC1); |
| int ext2 = lm85_read_value(client, |
| ADM1027_REG_EXTEND_ADC2); |
| int val = (ext1 << 8) + ext2; |
| |
| for (i = 0; i <= 4; i++) |
| data->in_ext[i] = |
| ((val >> (i * 2)) & 0x03) << 2; |
| |
| for (i = 0; i <= 2; i++) |
| data->temp_ext[i] = |
| (val >> ((i + 4) * 2)) & 0x0c; |
| } |
| |
| data->vid = lm85_read_value(client, LM85_REG_VID); |
| |
| for (i = 0; i <= 3; ++i) { |
| data->in[i] = |
| lm85_read_value(client, LM85_REG_IN(i)); |
| data->fan[i] = |
| lm85_read_value(client, LM85_REG_FAN(i)); |
| } |
| |
| if (!(data->type == adt7463 && (data->vid & 0x80))) { |
| data->in[4] = lm85_read_value(client, |
| LM85_REG_IN(4)); |
| } |
| |
| for (i = 0; i <= 2; ++i) { |
| data->temp[i] = |
| lm85_read_value(client, LM85_REG_TEMP(i)); |
| data->pwm[i] = |
| lm85_read_value(client, LM85_REG_PWM(i)); |
| } |
| |
| data->alarms = lm85_read_value(client, LM85_REG_ALARM1); |
| |
| if (data->type == emc6d100) { |
| /* Three more voltage sensors */ |
| for (i = 5; i <= 7; ++i) { |
| data->in[i] = lm85_read_value(client, |
| EMC6D100_REG_IN(i)); |
| } |
| /* More alarm bits */ |
| data->alarms |= lm85_read_value(client, |
| EMC6D100_REG_ALARM3) << 16; |
| } else if (data->type == emc6d102) { |
| /* Have to read LSB bits after the MSB ones because |
| the reading of the MSB bits has frozen the |
| LSBs (backward from the ADM1027). |
| */ |
| int ext1 = lm85_read_value(client, |
| EMC6D102_REG_EXTEND_ADC1); |
| int ext2 = lm85_read_value(client, |
| EMC6D102_REG_EXTEND_ADC2); |
| int ext3 = lm85_read_value(client, |
| EMC6D102_REG_EXTEND_ADC3); |
| int ext4 = lm85_read_value(client, |
| EMC6D102_REG_EXTEND_ADC4); |
| data->in_ext[0] = ext3 & 0x0f; |
| data->in_ext[1] = ext4 & 0x0f; |
| data->in_ext[2] = ext4 >> 4; |
| data->in_ext[3] = ext3 >> 4; |
| data->in_ext[4] = ext2 >> 4; |
| |
| data->temp_ext[0] = ext1 & 0x0f; |
| data->temp_ext[1] = ext2 & 0x0f; |
| data->temp_ext[2] = ext1 >> 4; |
| } |
| |
| data->last_reading = jiffies; |
| } /* last_reading */ |
| |
| if (!data->valid || |
| time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) { |
| /* Things that don't change often */ |
| dev_dbg(&client->dev, "Reading config values\n"); |
| |
| for (i = 0; i <= 3; ++i) { |
| data->in_min[i] = |
| lm85_read_value(client, LM85_REG_IN_MIN(i)); |
| data->in_max[i] = |
| lm85_read_value(client, LM85_REG_IN_MAX(i)); |
| data->fan_min[i] = |
| lm85_read_value(client, LM85_REG_FAN_MIN(i)); |
| } |
| |
| if (!(data->type == adt7463 && (data->vid & 0x80))) { |
| data->in_min[4] = lm85_read_value(client, |
| LM85_REG_IN_MIN(4)); |
| data->in_max[4] = lm85_read_value(client, |
| LM85_REG_IN_MAX(4)); |
| } |
| |
| if (data->type == emc6d100) { |
| for (i = 5; i <= 7; ++i) { |
| data->in_min[i] = lm85_read_value(client, |
| EMC6D100_REG_IN_MIN(i)); |
| data->in_max[i] = lm85_read_value(client, |
| EMC6D100_REG_IN_MAX(i)); |
| } |
| } |
| |
| for (i = 0; i <= 2; ++i) { |
| int val; |
| |
| data->temp_min[i] = |
| lm85_read_value(client, LM85_REG_TEMP_MIN(i)); |
| data->temp_max[i] = |
| lm85_read_value(client, LM85_REG_TEMP_MAX(i)); |
| |
| data->autofan[i].config = |
| lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); |
| val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); |
| data->pwm_freq[i] = val & 0x07; |
| data->zone[i].range = val >> 4; |
| data->autofan[i].min_pwm = |
| lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); |
| data->zone[i].limit = |
| lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); |
| data->zone[i].critical = |
| lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); |
| } |
| |
| i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); |
| data->autofan[0].min_off = (i & 0x20) != 0; |
| data->autofan[1].min_off = (i & 0x40) != 0; |
| data->autofan[2].min_off = (i & 0x80) != 0; |
| |
| i = lm85_read_value(client, LM85_REG_AFAN_HYST1); |
| data->zone[0].hyst = i >> 4; |
| data->zone[1].hyst = i & 0x0f; |
| |
| i = lm85_read_value(client, LM85_REG_AFAN_HYST2); |
| data->zone[2].hyst = i >> 4; |
| |
| data->last_config = jiffies; |
| } /* last_config */ |
| |
| data->valid = 1; |
| |
| mutex_unlock(&data->update_lock); |
| |
| return data; |
| } |
| |
| |
| static int __init sm_lm85_init(void) |
| { |
| return i2c_add_driver(&lm85_driver); |
| } |
| |
| static void __exit sm_lm85_exit(void) |
| { |
| i2c_del_driver(&lm85_driver); |
| } |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, " |
| "Margit Schubert-While <margitsw@t-online.de>, " |
| "Justin Thiessen <jthiessen@penguincomputing.com>"); |
| MODULE_DESCRIPTION("LM85-B, LM85-C driver"); |
| |
| module_init(sm_lm85_init); |
| module_exit(sm_lm85_exit); |